Insulation backboard for solar photovoltaic module

A solar photovoltaic and component technology, applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve problems that affect the service life of solar photovoltaic components, failure of insulating backplane protection performance, and accelerated decomposition of polyvinylidene fluoride. Low cost, meet the requirements of industrial scale-up production, and ensure the effect of service life

Inactive Publication Date: 2011-03-30
CHANGSHU TOP SOLAR MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since polyvinylidene fluoride itself is prone to orientation during film formation, and the added inorganic fillers tend to accelerate the decomposition of polyvinylidene fluoride, and the compatibility between inorganic fillers and polyvinylidene fluoride is relatively weak (deficient). , so the

Method used

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  • Insulation backboard for solar photovoltaic module
  • Insulation backboard for solar photovoltaic module
  • Insulation backboard for solar photovoltaic module

Examples

Experimental program
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Embodiment 1

[0024] please see figure 1 , the given insulating backsheet for solar photovoltaic modules includes a weather-resistant layer 1, a barrier layer 3, an electrical insulating layer 5 and an adhesive layer 7, and the surface of the barrier layer 3 facing the weather-resistant layer 1 is figure 1 The surface facing upwards is bonded together by the first adhesive layer 2 and the weather-resistant layer 1, and the side surface of the barrier layer 3 facing the electrical insulating layer 5 is figure 1 The surface facing downwards is shown by the second adhesive layer 4 and one side surface of the electrical insulating layer 5 ( figure 1 The side facing upward) is bonded as a whole, and the other side surface of the electrical insulating layer 5 is figure 1 The surface on the side facing downwards is shown, that is, the surface on the side facing the adhesive layer 7 is bonded together by the third adhesive layer 6 . In the state of use, that is, when the insulating backsheet for ...

Embodiment 2

[0028]Change the thickness of the weather-resistant layer 1 to 50 μm, change the thickness of the barrier layer 3 to 4 μm, change the thickness of the electrical insulation layer 5 to 250 μm, and change the thickness of the adhesive layer 7 to 50 μm. The parts by weight of vinyl fluoride, acrylic resin and inorganic material are respectively changed into 20 parts, 12 parts and 1 part, wherein: acrylic resin uses polybutylmethacrylate, and inorganic material uses carbon black; The materials of adhesive layers 2, 4 and the third adhesive layer 6 all use acrylic adhesive, and the barrier layer 3 is a polyethylene terephthalate film ( PET film), the material of the electrical insulation layer 5 uses polyethylene 2,6-naphthalate, and the material of the adhesive layer 7 is changed to low-density polyethylene. All the other are the same as the description to embodiment 1.

Embodiment 3

[0030] Change the thickness of the weather-resistant layer 1 to 30 μm, change the thickness of the barrier layer 3 to 20 μm, change the thickness of the electrical insulation layer 5 to 180 μm, and change the thickness of the adhesive layer 7 to 30 μm. The material of the electrical insulation layer 5 is poly Amide; Change the parts by weight of polyvinylidene fluoride, acrylic resin and inorganic material to constitute the weather-resistant layer 1 into 65 parts, 45 parts and 10 parts respectively, wherein: acrylic resin uses polybutylmethacrylate, adhesive The bonding layer 7 uses ethylene-vinyl acetate copolymer. All the other are the same as the description to embodiment 1.

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Abstract

The invention relates to an insulation backboard for a solar photovoltaic module, and belongs to the technical field of solar photovoltaic cells. The insulation backboard comprises a weather-resistant layer, an electric insulation layer and an adhesive layer, and is characterized by further comprising a blocked layer arranged between the weather-resistant layer and the electric insulation layer, wherein the surface of the blocked layer facing the weather-resistant layer is combined with the weather-resistant layer through a first bonding layer, the surface of the blocked layer facing the electric insulation layer is combined with one surface of the electric insulation layer through a second bonding layer, the other surface of the electric insulation layer is combined with the adhesive layer through a third bonding layer, the weather-resistant layer is a mixture of polyvinylidene fluoride and acrylic acid resin and an inorganic material, the blocked layer is an aluminum foil or a polyethylene glycol terephthalate film, and the electric insulation layer is polyethylene glycol terephthalate, poly (ethane ethylene 2,6-naphthalate) or polyamide. The insulation backboard can increase steam obstruction effect and ultraviolet resistance, ensure the service life, enhance the steam obstruction effect, and meet the requirement for industrialization scale production without dependence on import.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaic cells, and in particular relates to an insulating backboard used for solar photovoltaic modules. Background technique [0002] As is well known in the industry, the overall structure of a solar photovoltaic cell includes: a frame (usually using an aluminum frame), a solar photovoltaic glass installed on the frame, and a battery sheet (also called a silicon wafer or silicon plate) located under the solar photovoltaic glass. ), hot melt adhesive layer (EVA layer), junction box and insulating backplane. Since solar photovoltaic modules are usually installed outdoors, it is undoubtedly required to have ideal weather resistance. The United States has established a goal of 30 years of service life for solar photovoltaic (PV) components, so in addition to strict technical requirements for sealants used in PV components (technical requirements such as: resistance to high and low temperature en...

Claims

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Application Information

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IPC IPC(8): B32B15/08B32B27/08B32B27/20H01L31/048H01L31/049
CPCY02E10/50
Inventor 杨小旭邵名巍
Owner CHANGSHU TOP SOLAR MATERIAL
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